Base Station Resource Allocation Using Carrier Aggregation
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Solution Overview
Problem
The increased processor load on base stations due to frequency selective scheduling (FSS) and carrier aggregation in cellular wireless communication systems leads to inefficiencies, as it requires extensive signaling and processing, potentially overwhelming the system and necessitating the disabling of FSS to maintain stability.
Innovation Solution
Implementing a method where the base station determines if a UE is being served with carrier aggregation and adjusts resource allocation accordingly, disabling FSS for UEs with carrier aggregation while maintaining it for those without, and also limiting FSS for UEs served on larger frequency channels to reduce processor load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency selective scheduling (FSS) is implemented for all UEs, then resource allocation efficiency is improved, but processor load on base station increases excessively
Solution Approach 1:
The patent applies local quality by enabling FSS selectively for specific UEs based on their channel conditions and carrier aggregation status. Instead of uniformly applying FSS to all UEs, the base station evaluates each UE's requirements and applies FSS only where beneficial, thereby improving resource allocation efficiency for appropriate UEs while avoiding excessive processor load from universal application.
Solution Approach 2:
The patent changes the parameter of FSS application from a binary all-or-nothing approach to a conditional approach based on UE-specific parameters such as carrier aggregation status and channel quality. The base station dynamically adjusts whether to apply FSS to each UE based on these parameters, resolving the contradiction between efficiency improvement and processor load management.
2Reliability
If FSS is disabled to reduce processor load, then system stability is maintained, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent applies dynamics by making the FSS application status dynamic and adaptable rather than static. The base station continuously monitors UE conditions and dynamically adjusts whether to apply FSS to each UE. This dynamic approach allows the system to maintain stability by disabling FSS when processor load is high while preserving efficiency by enabling FSS for appropriate UEs under suitable conditions.
3Speed
If FSS is applied to UEs with carrier aggregation, then data rate is improved, but signaling overhead and processing complexity increase
Solution Approach 1:
The patent applies local quality by differentiating FSS application based on carrier aggregation status. For UEs with carrier aggregation, the base station evaluates whether FSS provides sufficient benefit to justify the increased processing complexity. This selective approach ensures that high data rates are achieved for UEs where FSS is most beneficial while avoiding unnecessary processing overhead for UEs where simpler scheduling suffices.
Data Source
AI summary
Disclosed is a method and corresponding apparatus for enhanced scheduling of resources based on use of carrier aggregation. The method involves determining that (i) an individual UE is being served with carrier aggregation or with greater than a threshold amount of frequency and (ii) a processor load of the base station is greater than a threshold load. The method then involves, responsive to the determining that the individual UE is being served with carrier aggregation or with greater than a threshold amount of frequency and that the processor load of the base station is greater than the threshold load, causing the base station to allocate an extent of resources to the individual UE without using FSS.